Quiz  /  Electrical Inductors Class 10 MCQ Questions With Answers

  • 1. 
    The production of a voltage across an inductor as a result of its own expanding or contracting magnetic field is called ____.

  • Flux density
  • Self-inductance
  • Counter emf
  • Faraday's second law

  • 2. 
    The ability of a capacitor to store a charge is called __________.

  • Resistance
  • Capacitance
  • Inductance
  • Dielectric constant

  • 3. 
    With respect to the capacitor, which relationship is true?

  • C = Q/V
  • V = C×Q
  • Q = C/V
  • Q = V/C

  • 4. 
    If the capacitance of a capacitor is 47μF, and the voltage difference across the capacitor terminals is 6V, then the energy stored in that capacitor is:

  • 846×10-6Joule
  • 7.23×10-3 Joule
  • 6.76×10-5Joule
  • 5.94×10-2Joule

  • 5. 
    ------------------------ is created out of two metal plates and an insulating material called a dielectric.

  • An inductor
  • A capacitor
  • A fixed resistor
  • A variable resistor

  • 6. 
    An inductor with an inductance of 5mH is connected in series with a 20 ohm resistor.What is the time constant of the inductor?

  • 2.5 x 10^-4 s
  • 4 x 10^4 s
  • 0.1s
  • 100s

  • 7. 
    Which of the following is the unit of inductance?

  • Ohm
  • Henry
  • Ampere turns
  • Webers/meter

  • 8. 
    The voltage induced across an inductor as its magnetic field collapses is called ____.

  • Counter emf
  • Transition voltage
  • Reverse voltage
  • Counter voltage

  • 9. 
    The unit of measurement for the inductor is

  • Farad
  • Henry
  • George
  • Jones

  • 10. 
    Inductor cores can be made of

  • air
  • iron
  • magnetic materials
  • all of these

  • 11. 
    Inductors connected in series will

  • be the reciprocal of the sum total of inductors for final value of Henrys
  • be the sum total of inductors for final value of Henrys
  • be the reciprocal of the sum of reciprocals of each inductor
  • act as a voltage divider network

  • 12. 
    ELI went to visit ICE and the two really resonated together! As a result, a ???? circuit was born.

  • Cole-Porter phase invertor
  • rejector
  • tank
  • Dailey-Vincent oscillator

  • 13. 
    An inductor is also called

  • choke
  • coil
  • reactor
  • all of these

  • 14. 
    EMF is an acronym for

  • Engineering Multiplier Force
  • Elector Magnetic Field
  • Electro Motive Foce
  • Electronic Motivator Field

  • 15. 
    The force that opposes a rise in current is the

  • BEMF
  • EMF
  • MFF
  • BPM

  • 16. 
    Skin effect is a concern

  • at lower frequencies
  • cable is exposed to UV rays
  • at higher frequencies
  • there are many eddy currents present

  • 17. 
    An Inductor works as a ___________ circuit for DC supply.

  • Open
  • Short
  • Polar
  • Non-polar

  • 18. 
    The magnetic field can be increased by adding

  • removing the core
  • adding a core
  • decreasing the number of windings
  • changing the diameter of the wire insulation

  • 19. 
    Skin effects tends to

  • heat the conductor
  • cause a huge loss of efficiency
  • concentrate electrons on the outer edge (skin) of the conductor
  • cause signal distortion

  • 20. 
    Your grade for inductors will depend highly on

  • how much I like you
  • how much you study
  • how lucky you are
  • luck of the draw

  • 21. 
    An simple inductor is a straight piece of wire

  • True
  • False

  • 22. 
    An inductor stores energy

  • in the skin of the conductor
  • in the magnetospheric region of the electrons
  • in the dielectric material
  • in a magnetic field

  • 23. 
    Inductive reactance is expressed as

  • 1/2πfL
  • 2πfL
  • f/2πL
  • X
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